I agree with Graham being a good name, but Laura has never been a favorite of mine. Your choice, my opinion.

“I read books when I was a kid, lots of books. Books always seemed like magic to me. They took you to the most amazing places. When I got older, I realized I couldn't find books that took me to all the places I wanted to go. To go to those places, I had to write some books myself.”
― Pat Murphy, The Wild Girls

"Like everyone else, I am going to die. But the words – the words live on..."
― J. Michael Straczynski

I don't have any great advice for this one, I'd say when you're going with that many, don't 'hand-pick' the names for each character-pick a theme and go with it. If you want simpler, common names, go for the obvious ones:

AnnaLaura (yep, I'm agreeing with you. )Kiley
etc. (no, not as a name!)

If you want more unique names, type in the 'theme' on google (you find some amazing names on google, for really broad and/or specific descriptions) or nameberry, and just check off your favorites from the list you find. I wouldn't take particular care with the names when they come in such great quantities.

“I read books when I was a kid, lots of books. Books always seemed like magic to me. They took you to the most amazing places. When I got older, I realized I couldn't find books that took me to all the places I wanted to go. To go to those places, I had to write some books myself.”
― Pat Murphy, The Wild Girls

"Like everyone else, I am going to die. But the words – the words live on..."
― J. Michael Straczynski